title: Commentary on Toll et al.
authors.affiliation: Department of Pathology, Mount Sinai Hospital, University of Toronto, Toronto, Canada. rriddell@mtsinai.on.ca
authors.forename: Robert H
authors.initials: RH
authors.lastname: Riddell
mesh_terms: D000230:Adenocarcinoma / Q000453:epidemiology / Q000473:pathology; D000236:Adenoma / Q000453:epidemiology / Q000473:pathology*; D018256:Adenomatous Polyps / Q000453:epidemiology / Q000473:pathology*; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000453:epidemiology / Q000473:pathology*; D006801:Humans; D015588:Observer Variation; D011379:Prognosis; D015983:Selection Bias; D009626:Terminology as Topic